Product data for multiple attic style sprinklers simply states that a hose allowance must be provided in accordance with NFPA 13 when using special application attic style sprinklers.
My logic, therefore, is that unused attic spaces show up as light hazard in A.5.2 (2016 Edition) and thus the hose allowance is 100 gpm for combustible attic spaces that don't house mechanical equipment or storage.
Am I off base here? While it isn't my case I would think the presence of mechanical equipment or storage in the attic would bump the density at least to OH1 and 250 gpm for the hose allowance.
Posted anonymously for discussion. Discuss This | Submit Your Question | Subscribe
Subscribe and learn something new each day:
Thank You to Our Top September Contributors!
Sprinkler Designer or Engineer?
Get all of our tools, including the Sprinkler Database, Friction Loss Calculator, Fire Pump Analyzer and more:
Daily discussion questions are open-ended questions posed by members for the benefit of sharing expertise and learning from other perspectives. Join as a member here.
2019 PE Prep Guide
PE Prep Series
(Click to enlarge)
Visit July-October for daily Fire Protection PE Exam sample questions.
Solutions are posted the day after posting.
Comment with your solutions, questions or clarifications.
Please note that questions posted are unofficial and in accordance with NCEES rules are intended to be similar to actual exam questions, not actual exam questions themselves.